2140636429 has 2 divisors, whose sum is σ = 2140636430. Its totient is φ = 2140636428.

The previous prime is 2140636423. The next prime is 2140636441. The reversal of 2140636429 is 9246360412.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1556302500 + 584333929 = 39450^2 + 24173^2 .

It is a cyclic number.

It is not a de Polignac number, because 2140636429 - 2⁷ = 2140636301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2140636423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070318214 + 1070318215.

It is an arithmetic number, because the mean of its divisors is an integer number (1070318215).

Almost surely, 2^2140636429 is an apocalyptic number.

It is an amenable number.

2140636429 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140636429 is an equidigital number, since it uses as much as digits as its factorization.

2140636429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 2140636429 is about 46267.0123197943. The cubic root of 2140636429 is about 1288.7864775119.

The spelling of 2140636429 in words is "two billion, one hundred forty million, six hundred thirty-six thousand, four hundred twenty-nine".